Hi, I am a fire investigator and use a D5100 for my scene photos. Bulk and weight are considerations as I work in fire scenes. I need a low profile compact flash for my camera. My pop-up flash does ok most of the time, but I need a bit more light. I need something very budget friendly and be as small as possible. I would appreciate any suggestions. Btw, I am a novice at camera lengo, so please excuse my seemingly simplistic approach to my needs. thanks!!!
Camera guys rate flash power by
Guide Number (GN, expressed in ft or meters). Your D5100 built-in flash has a GN of 12m or 39ft. When looking for more powerful flashes, check the specifications and look for a GN bigger than 12m. A typical general-purpose flash has a guide number somewhere around 30-60m.
Other important considerations in the specifications are
- TTL operation compatible with Nikon, this means the flash and camera will work together to get the right exposure.
- rotating & tilting head for bounce flash, remote operation (helps with NFPA 921 Sec 8-2.2.6. Lighting)
- recycle times or how long it takes to recharge the capacitor after a full-power flash.
- number of full-power flashes you'll get on a fresh set of batteries.
Godox TTL flashes are the current darlings in the photography world, cheap, works well. Most models (maybe all?) can be operated remotely by buying a cheap radio unit (X1T-
N). Durability seems OK but they're so cheap if it breaks you just buy another one. In the USA, they're sold at Adorama.com using the Flashpoint brand for more localized customer support
Godox TT350
N (GN=36m) is pretty small but uses only 2 AA batteries for 210 full-power flashes.
Godox TT685
N (GN=60m) is larger, more powerful, 4 AA's for 230 full power flashes.
Godox V860II
N (GN=60m) has a custom Li-ON battery pack for 650 full power flashes.